code: def VAR_NAME(val, prefix=""):
      global ALL
  
      for key in ALL.keys():
          value = ALL[key]
          if value == val and key != "val":
              if prefix == "" or (
                  prefix != "" and prefix == key[: len(prefix)]
              ):
                  return key
      return None
  
file_path: mindsdb/mindsdb/api/mysql/mysql_proxy/libs/constants/mysql.py
label_desc: Use image node_id 1 for calling a global function with example usage: VAR_NAME(val, prefix) and returns: None, key